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參數(shù)資料
| 型號： | SAA2500 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | MPEG Audio Source Decoder |
| 中文描述： | MPEG音頻源解碼器 |
| 文件頁數(shù)： | 19/47頁 |
| 文件大?。?/td> | 199K |
| 代理商： | SAA2500 |
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September 1994
19
Philips Semiconductors
Preliminary specification
MPEG Audio Source Decoder
SAA2500
The filter data interface uses 6 signals as shown in Table 10.
Table 10
Signals of filter data interface.
SIGNAL
DIRECTION
FUNCTION
TO
TA
TI
SCK
WS
TB
output
output
input
output
output
output
filter data output
filter data error flag
filter data input (optionally processed)
filter data (output/input common) bit clock
filter data (output/input common) word select
filter data output frame synchronization
Fig.12 Filter data serial transfer format.
handbook, full pagewidth
WS
SCK
TO
1
left sample
2
24
MSB
LSB
25
26
32
TI
1
right sample
2
MSB
TB
WS
MGB500
0
1
2
30
31
0
1
subband
L
R
L
R
valid data
undefinied data
Two subband samples (one per channel) are transmitted
per sample period with output TO. The transmission
pattern of the samples S [sb, ch] (sb: subband index; ch:
channel) is: S [0, L], S [0, R], S [1, L], S [1, R],..., S [31, R],
S [0, L], S [0, R], etc. Word select signal WS indicates the
channel of each sample. (WS is also used for the
baseband audio output interfacing).
The subband sample bit clock SCK has a frequency of 64
times the sample frequency. The subband samples are
transmitted in 24 bit two's complement PCM form, MSB
first. Thus, of the available 32 TO bits per sample per
channel, only 24 are used. The MSB of a sample follows
one SCK period after each transition in WS. The
8 unused bits between individual samples in TO are zero.
(SCK is used for the baseband audio output interface as
well.) The optionally processed subband data signal is fed
back as input TI in a similar format as TO, but now the
8 unused bits between individual samples are undefined;
they are neglected by the SAA2500.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA2500H | MPEG Audio Source Decoder |
| SAA2501 | Digital Audio Broadcast DAB decoder |
| SAA2501H | Digital Audio Broadcast DAB decoder |
| SAA2502 | ISO/MPEG Audio Source Decoder |
| SAA2502H | ISO/MPEG Audio Source Decoder |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA2500GP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Video Processing/ENDEC for MPEG |
| SAA2500H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:MPEG Audio Source Decoder |
| SAA2500HB-S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Video Processing/ENDEC for MPEG |
| SAA2501 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital Audio Broadcast DAB decoder |
| SAA2501H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital Audio Broadcast DAB decoder |
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